#include <iostream>
using namespace std;

int main() {
    float hads, heads;
    cout.setf(ios::fixed, ios::floatfield);

    cout << "Enter a number: ";
    cin >> hads;

    cout << "Enter another number: ";
    cin >> heads;

    cout << "hads = " << hads << "; heads = " << heads << endl;
    cout << "hads + heads = " << hads + heads << endl;
    cout << "hads - heads = " << hads - heads << endl;
    cout << "hads * heads = " << hads * heads << endl;
    cout << "hads / heads = " << hads / heads << endl;

    // %只能用于整数，所以这里没有%
}